Québecor is a media and telecommunications company based in Canada, not France. I apologize for the confusion. Québecor was founded in 1965 and is headquartered in Montréal, Quebec, Canada.

The company operates through two main subsidiaries: Quebecor Media Inc. Quebecor Media Inc. Videotron Ltd.

In terms of its global operations, while Québecor primarily focuses on the Canadian market, it does have some international presence. In 2017, Québecor launched an over-the-top streaming platform called Club illico, which offers its content to French-speaking audiences outside of Canada, including in France. Québecor also has several noteworthy subsidiaries, joint ventures, and partnerships.

It owns TVA Group, the largest French-language broadcaster in North America, and Sun Media Corporation, which operates various newspapers and online media platforms. Additionally, Québecor has partnerships with several organizations such as the National Hockey League's Montreal Canadiens and the Just For Laughs comedy festival. In terms of market position, Québecor is one of the leading media and telecommunications companies in Canada.

It has a strong presence in Quebec, where it dominates the market in terms of television broadcasting, cable services, and internet provision. However, its market share in other provinces is relatively smaller due to the concentration of its operations in Quebec. In recent years, Québecor has focused on expanding its digital offerings, investing in content production, and diversifying its revenue streams.

This includes the growth of its streaming platform, Club illico, and increasing its presence in e-commerce. Additionally, the company has pursued strategic acquisitions to strengthen its position in the media and telecommunications industry. As of the latest available information, Québecor continues to be a major player in the Canadian media and telecommunications sector.

It has maintained its market dominance in Quebec while expanding its digital services to reach a wider audience. However, specific details about the company's most recent developments or updates are not available